3751146

Information

• Patent Grant
• 3751146

• References
• Source

• Patent Number

  3,751,146

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1973
  51 years ago

• CPC

  • G03B19/26 - with fade-in and fade-out effects

• US Classifications

  • 352 - Optics: motion pictures
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing